Find out about my drive 's filesystem
 

I have a hard-drive that I can would like to know what the file system is.

1. Do I have to try mounting it with different filesystem option?
2. If I already have that drive mounted, is there a linux cmd to find out the filesystem on that drive, eg. ext2 or ext3?

"file -sL /dev/???"
If it's already mounted, "df -T"

I format my drive with Redhat using vfat option, then I put it in the enclosure and try to access it via XP, but it did not work. Anyone have a way around?

When I format I used /sbin/mkfs -t vfat /dev/sda1.

Dunno - never had a problem.
What do the above commands (on Linux) reveal ?.